CVE-2020-10948Public exploitNetwork attack vector

Unauthenticated command execution via CGI eval injection

Published Apr 1, 2020 · Updated Aug 4, 2024

Code injection in Jon Hedley AlienForm2 2.0.2 allows remote attackers to execute arbitrary commands through crafted CGI requests. The af2.cgi handler evaluates attacker-controlled _browser_out parameter content, allowing pipe-delimited shell commands to run. No authentication or user interaction is required; identifying the exposed CGI endpoint is sufficient to execute commands with the web server process's privileges.

CVSS severity9.8
Critical
EPSS probability6.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Jon Hedley AlienForm2 2.0.2 allows remote attackers to execute arbitrary commands through crafted CGI requests. The af2.cgi handler evaluates attacker-controlled _browser_out parameter content, allowing pipe-delimited shell commands to run. No authentication or user interaction is required; identifying the exposed CGI endpoint is sufficient to execute commands with the web server process's privileges.

The record

CVE
CVE-2020-10948
Published
Apr 1, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-94, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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